Blower for water-tube boilers.



L MASSE.

BLOWER POB. WATER TUBE BOLBRS.

APPLICATION FILED JUNE 20, 1912. L,

Pafltt 513,15( 29, i913. 2 Samia-SHEET 1.

INVENTDR VQ' f E Mk@ ATTDRNEY J. MAGEE.

BLOWER FOR WATER TUBE BOILBRS.

APPLICATION FILED JUNE 20, 1912.

Patented July 29,193.3.

Z SHEETS-SHEET 2* ATT D RN E-Y E',

JOHN MAGEE, OF "DETROT, CHIGN, AS

SGNOB, T DIAMOND E'OVJER SPECIALTY COMPANY, GF DETRIT, MICHGAN, .A CORPORATION F ll/HCHGH.

Browne roe irernerusn sortons.

Specification of Letters Eetent.

reeeeeeu Juni eli, reis.

Application -led June 1912. A Serial No. 704,827.

'o all fui/1mm t may concern. i. a

Be it known that l, JOHN Meeren, zii-citizen. of Canada, residing at Detroit, in the county of l.Vayne and State of Michigan, have invented a new and useful improvement in.y

Blowers for lWater-Tulle Boilers, oi which the following is a specitication.

This invention relates to a 'blower or cleaner of the kindern loyed for removing soot from the tubes o Water tribe boilers,v and more particularly to boilers having in clined tubes, such. for example, as the well known Babcock 'Wilcox type. -Such boilers are commonly provided with narrow upright cleaning doors or openings, and the present invention has incre especial reference to a blower comprising ajet-pipe or header adapted to be retracted into the cleaning' opening or equivalent recess of the boiler-setting` when not in use, toprotect it from the heat of the combustion cheinber. To obtain the best results., it is necessary 'to l. if

dispose the header when in use, substantial Vat right ongles to the inclined boiler tubes.,

and at the saine time render it adjustable in such manner 'that the steam its nuiy he vmoved lengthwise of the tubes or parallel therewith rather than ololiquely thereto. The

cleaning3 openings or doors of such boilers are however too'narroiv to permit the header to be permanently disposed in the necessary angular or tilted position for this purpose.

The object of iny invention is the provision of an effective and comparatively. siniple blower of this kind capable o"V being; niovcd kinto the combustion chamber and placed. in the desired angular position when in usev and to be turned in line with the cleaningopening or recess and Withdrawn into it, when not in use.

A, further object of the invention is to so constri'n-t the blo'wcithat it is automatically projected toward the boiler 'tubes and positioned substantially at rightangles thereto upon admitting steam to the blower, and is automatically withdrawn into said cleaning` op"ning or recess upon turning the steam oii'.

ln the accompanying'drawings consisting or sheets: Figure l is a fragmentary side elevation of a boiler equipped with thehlower. Fig. 2 is a transverse section thereot'. Fig. 3 is an enlarged sectional elevation of the blower detached from the boiler. Fig. 4 is o. fragmentary horizontal section on line 4-4, Fig. 3. ligs. 5 and 6 are transverse tive po sections on the correspondingly numbered' lines :in Fig. 3. Fig. i is a `vlece View of the indicator disk and its actuating device.

Similar ohci-actors of referenceindicate corresponding parts throughout the several views.

indicates the customary boiler setting,

2 one of the usual upright rectangular. clea-ning doors or openings,v and 3 the inclined Water tubes.

indicates the metallic dooror door-plate secured in said cleaning opening and having the usual upright series of cleaningT openings '5 through which the ordinary cleaning-noz zle- (not shown) is inserted, but which -openings are notutilif/.ed in connection with the present invention. The cleaning door or opening forms a pocl'ret' or recess which receives the houder or blowerftube. hereinafter described, when in its retracted or inopera` ion.

lV indicates the shell or casing of 'the blower which is preferably of tubular torni and erranged horizontally in the cleaning openinq. the saine being; suitably secured et its inner end to .a divided oase plate i" 'v-.fhich in i., tened to the outer side of the door arranged leiigthwiW 4within' vthe shell is s. steam tube or condeit S capable or sliding ond rotating therein. This tube opens at its rear end into the r portion of the shell which is-provided with on inlet connection'lO to which the steam supply pipe l?. is connected. rilus tube passes .through openings in the base plate 7 and the door 4plate-l ,and terlninates in a hollow T-head or enlargement 12 which carries n transverse-jet pipeor header i3 communicating with said tube and provided on its front side ivitliga series of suitoblyepaced iet openings or nozzles le from which jets of steam issue among or .loetween the boiler tubes for detoching the soot therefrom. This header may be or' any suitable construction, but preferably consists ofiitrpf per and lower pipe-sections screwed into opl'- posite ends of a rotary coupling or sleeve 1.5

journaled in the ihead l2 and having steam apertures or passages 1G by which said jet pipes communicate with the steani tube 8. By this construction the header may be rocked or partly rotated on its axis to de:4 liver the steam jets directly across the con1- bustion chamber or toward the front and rear ends thereof. The header-pipes are preferably incloscd within jackets or tubes 17 to protect them from the hea-t of the combustion chamber. rlfhe jackets are closed at their outer ends by caps 18 'and seated at their inner ends in the T-head 12, as shown in Fig. 3. rThe jet nozzles 14 pass through the jackets and header pipes, firmly securing them together.

The steam tube 8 is provided with a piston or cylindrical enlargement 19 adapted to receive the pressure ofthe steam admitted to the blower, so as to push said tube forwardly and project the header into its operative position within the combustion chamber, asshown by dotted lines in Fig. 2.

Suitable means arel provided for automatically turning the header at right angles to the boiler tubes, or substantially so, simultaneously with its advancing movement. For this purpose the piston 19 is provided in its periphery with one or more spiral or cam grooves 20 with which engage stationary radial bolts or pins 21 carried by the shell. Obviously, when the steam tube 8 is pushed forward by the entering steam, the .tube and header carried thereby are partially turned relatively to the shell. These spiral grooves are of such length and pitch as to` turn or tilt the header from its upright position to a position substantially at right angles to. the boiler tube, as shown by dotted llines in Fig. 1.

The sliding tube 8 is provided at its rear end with. an extension 22, preferably of semi-circular form, terminating in a collar 23 to which is rigidly secured a tube or hollow stem 24, which extends through a stutling box 25 in the rear end of the shell. In the construction shown in the drawings, this hollow stem is secured to said collar by a transverse pin 26. To the outer portion of the hollow stem, a Hanged collar 2T is secured and between this collar and the stutiing box 25 is interposed a spiral spring 28 which is compressed when the header is projected into the combustion chamber by the steam pressure, and which reacts and withdraws the header into the recess or cleaning opening 2 when the steam supply is shut oif from the blower.

The devices for rocking or rotating -the header in the T-head of the sliding tube 8 may be of any suitable construction. preferred mechanism shown in the drawings comprises a rotary longitudinal shaft 29 passing through the hollow stem 24 andthe tube S and journaled nea-r its front/end in a bridge piece 30 carried by the latter. Fixed to the front end of this shaft is a spiral gear-31 which -meshes with a gear segment 32 carried by the rotary coupling sleeve 15, by which constructionsaid sleeve land the header pipes 13 secured thereto are lturned the distance of one tooth for cach complete rotation of said shaft. The latter The is provided at its outer end with a crank 33 or other suitable means forv turning 1t, and its outer port-ion passes througha packingnut 34 secured to the adjacent end of thea hollow stem 24.

An indicator of any appropriate construction is preferably combined with the blower for indicating to the operator the position or direction of the nozzles 14. The preferred indicator shown in the drawings consists of an upright rotary wheel or disk 35 secured to a horizontal shaft 36 supported in a bracket 37 carried' by the collar 27 which in turn is pinned or otherwise rigidly secured to the hollow stem 24. This indicating wheel is provided with peripheral notches 38 adapted to be engaged successively by a tooth or projection 39 carried bythe shaft 29, so that said Wheel is turned the distance of one notch for vevery com plete rotation of said shaft. This wheel is provided on its face with suitable markings or words, such as Front, Rear and Across which coperate with an arrow 40 upon the hub of the crank 33. The arrangement of these indications is such that when any one of them is brought in lineA with said arrow, the position of the header 13 will correspond to that indicated by said word. In the example .shown in the draw ings, Fig. 7, the word Across `stands in line with the arrow, indicating to the operator that the header-nozzles are adjusted to direct ythe cleaning jets squarely across the boiler tubes. To direct the jets toward the front of the boiler, the crank is turned until the word Front coincides-with the arrow, while to direct them toward the rear of the boiler, the crank is turned to bring the corresponding indication in line with, the arrow, intermediate adjustments of the nozzles being indicated in an obvious manner.

The operation .of the blower is as follows: The parts normally occupy the position indicated by full lines in Fig. 2, the header being retracted into the recess or cleaner opening 2, close to the door-plate 4 by the spring 29, and standing in la substantially upright position. When it is `desired to clean the boiler tubes, steam is admitted lto the shell, whereupon the steam tube 8 .is pushed forwardly by the steam pressure against its piston, thrusting the header 13 into the combustion chamber closely to the boiler tubes and at the same. time tiltingthe headerqat right angles to the boiler tubes, as hereinbefore described. By this action the spring. 28 is compressed. The steam admitted to the shell passes through .the'steam tube S and the apertured sleeve 15 into the headerand thence issues from the jet-nozzles among and against the boiler tubes, dislodging the soot therefrom. By means of the crank 33, the header may "be adjusted ineeiae and the rear ends ofthe boiler to cause the jets to sweep lengthwise over the inclined tubes, thus Agiving the blower a considerable range and insuring ai 'thorough cleaning ot the tubes throughout their lengtlii This wide adjustingb range et the blower pei-mits the use of jet-nozsles each haring; a single discharge passage or aperture, thus eoncen- *ti-ating the steam jets upon the boiler t bes in all adjustments the header and obtainn ing" a superior oleaniA action. This construction has the urther advantage that it does not interfere 'with 'the draft. Upon shutting ott the steam supply, the coinpressed spring 2d by its tendency to with` draw the tube S to its former position, causes the saine to be rota/ted by its spiral grooves 90 until the header is righted or swung back to its upright position zitter which it is withdrawn into the door opening or recess l by the continued drawingl action oi? the spring. is these tilting'and righting movements ot the header aswell as its advancing and retreat-ingl movements are all effected automatically, he blower is Ver)7 convenient in use, the operator being' onljy7 required to adjust the header by means oit the crank 33 after turning on the steam.

l claim as my invention:

1L The combination with a wall of a boilersetting having` a recess in its inner side and boiler-tubes extending' obliquely acrosssaid recess, ot a blower comprising ,a header or jet-pipe arranged crosswise of vthe boiler-tubes and movable in said recess toward and from the tubes, the header being arranged on the inner side of said wall and mounted to swing lengthwise oi the boiler tubes7 whereby it may be disposed substan tially at right angles 'thereto when projected.

The combination with a wall of a boiler setting having a substantially upright recess which opens into the combustion-chamber and 'inclined 'boiler-tubes extending across said recess, of a blower comprisingl a header or jet-pipe arranged crosswiseoit the boiler tubes and movable-in said recess toward and trom the tubes,' the header being arranged on the inner sido of said wall and mounted to swingles ;thwise of the tubes, whereby it may be disposed substantially at right .G es thereto when projected, and means 'for actuating the header.

3. The combination Awith a wall oit a boiler-setting` having a recess in its inner side and boiler-tubes extending obliquely across said recess1 'ot a blower comprising a header or jet-pipe, arranged crosswise-ot the boiler-tubes and movable in said recess toward and from the tulfi ,s,.the header being` arranged on the inner side ot saidii'ali and tilt-able lengthwise of the tubes and rotatable having a steam inlet, a ste 'in said casing", a header mounted transon its anis7 and in ans for actuating: header.

The combination with a wall boilensetting having recess in its side and boilentubes e" riding obiiii4 across said recess., et .a blower coiuprisi header er jiet-pipe arranfcgv boiler-tubes and more' in. said recess ward and from the tubes, the header b arranged onftlie inner side olf said wall a tilt able len gtlfiwise. oil l .ne tubes and ro onits anis means 'tor tilting; the head iA independent *n eens itoi' rotatii'igj the licadc'; tflibebi er coi pris-infr a casu Y is am tube sliilably am and rotatabli7 arrangedin said casino and adapted dto be moved torward by the team pressure., a header or -jet pipe, n'iounted traiiswersely on the trent end of said tube to turn tl-iereuf'ith and coinniunicating with the saine, and means 'for autoinaticallyv rotating; said tube when moved toi-wa rd.

t3. il tube-blower comprising' a easing havinga steam inlet, a steam tube arranged so versely on the front end of said tube and communicating therewith, the header being rotatable on its axis to deliver the steam' jets in different dirt-ictions.I and ine-ans for ro tating the header on said tube.

7. A blower comprising` a usingha ving; a pin extending into itsinterior, a steam tube slindably and 'rotatably arranged in said easing and provided with a spiralgrooi'e engaging said pin, and a header or jetqiin mounted on the front end of said steam tube.

8. A tube-blower comprising a casing; having a steam inlet, 4a steam tube slidalfily and rotatably arranged therein and adapted to be moved forward by the steam pressure, a header or jet pipe mounted transversely on the front end oit saidI tube and oonununieating therewithr'a sprintr arranged to tract said tube when relieved troni the steam pressure, and means `lor automatically rotating said tube when'shitted by said springe; or the steam pressure. i

91A tube blower comprising a casini; having a steam inletra steam tube rotatably arranged therein, a header arranged trans- 'his versely on the end ot said tube and mounted 'to rotate on its artis to deliver the steam 4and mounted to rotate on its artis, the header havin@ a l'ear sceiiient and an actuating;

t: o 71 shaft extending throught said casina` and having a spiral gear meshing` with said segmenty 1l. A tube. blower comprising' aeasing having a steam inlet, a steam tube rotatably arranged therein, a header or jet pipe ai'- ranged transversely on the end of said tube and mounted to rotate on its axis, a rotary adjusting member for said header, and an indicator operatively connected with said member.

l2. A tube blower comprising a easing havinga steam inlet, a steam tube rotatably arranged therein, a header or jet pipe arranged transversely on the end of said tube and mounted to rotate on its axis, a rotary adjusting shaft operatively EConnected with 4said header and carrying a projection, and.

an indicator wheel arranged to be engaged bysaid projection and having indications corresponding to different adjustments of the header.

13 .A tube blower Comprising a casing having a steam inlet, a steam tube rotatably arranged therein, a header or jet pipe arranged transversely on the end of said tube and mounted to rotateon its aXis, the header having a gear segment, a rotary adjusting shaft extending lengthwise through s aid casing and having a spiral gear engaging said segment and provided out-side of the casing with a projeetion, and an indicatorwheel arranged to be engaged by said shaft-- projection.

fitness my hand this eleventh day )f June, 1912. t p

,JOHN MAGEE. Witnesses t v E. C. HABEL,

AiLnnN KiNNEY. 

